| Answer | Crossword Clue |
|---|---|
| SAUCER | UFO, in old sci-fi films |
| EARTHMAN | Alien's nemesis, in sci-fi films |
| METEOR | Planetary threat in some sci-fi films |
| ESCAPEPOD | Last resort, in some sci-fi films |
| METEOR | Earth threat in some sci-fi films |
| ASSAULTOFTHEEARTH | Alien invaders' intent in many sci-fi films? |
